2 axis-group-engraver.cc -- implement Axis_group_engraver
4 source file of the GNU LilyPond music typesetter
6 (c) 1999--2001 Han-Wen Nienhuys <hanwen@cs.uu.nl>
10 #include "paper-column.hh"
11 #include "axis-group-interface.hh"
12 #include "engraver.hh"
13 #include "engraver-group-engraver.hh"
16 Put stuff in a Spanner with an Axis_group_interface.
17 Use as last element of a context.
19 class Axis_group_engraver : public Engraver
22 Spanner *staffline_p_;
23 Link_array<Grob> elts_;
24 virtual void initialize ();
25 virtual void finalize ();
26 virtual void acknowledge_grob (Grob_info);
27 virtual void create_grobs ();
28 virtual Spanner* get_spanner_p () const;
29 virtual void add_element (Grob*) ;
31 TRANSLATOR_DECLARATIONS(Axis_group_engraver );
36 Axis_group_engraver::Axis_group_engraver ()
42 Axis_group_engraver::initialize ()
44 staffline_p_ = get_spanner_p ();
45 Axis_group_interface::set_interface (staffline_p_);
46 Axis_group_interface::set_axes (staffline_p_, Y_AXIS, Y_AXIS);
48 Grob * it = unsmob_grob (get_property ("currentCommandColumn"));
50 staffline_p_->set_bound (LEFT,it);
52 announce_grob (staffline_p_, 0);
56 Axis_group_engraver::get_spanner_p () const
58 return new Spanner (get_property ("VerticalAxisGroup"));
62 Axis_group_engraver::finalize ()
64 String type = daddy_grav_l ()->type_str_ ;
65 SCM dims = get_property ("VerticalExtent");
67 if (gh_pair_p (dims) && gh_number_p (ly_car (dims))
68 && gh_number_p (ly_cdr (dims)))
70 staffline_p_->set_extent_callback (Grob::preset_extent_proc, Y_AXIS);
71 staffline_p_->set_grob_property ("extent-Y", dims);
74 dims = get_property ("MinimumVerticalExtent");
75 if (gh_pair_p (dims) && gh_number_p (ly_car (dims))
76 && gh_number_p (ly_cdr (dims)))
77 staffline_p_->set_grob_property ("minimum-extent-Y", dims);
79 dims = get_property ("ExtraVerticalExtent");
80 if (gh_pair_p (dims) && gh_number_p (ly_car (dims))
81 && gh_number_p (ly_cdr (dims)))
82 staffline_p_->set_grob_property ("extra-extent-Y", dims);
84 Grob * it = unsmob_grob (get_property ("currentCommandColumn"));
87 staffline_p_->set_bound (RIGHT,it);
89 typeset_grob (staffline_p_);
94 Axis_group_engraver::acknowledge_grob (Grob_info i)
96 elts_.push (i.grob_l_);
100 maybe should check if our parent_l is set, because we now get a
101 cyclic parent relationship if we have two Axis_group_engravers in
104 Axis_group_engraver::create_grobs ()
107 for (int i=0; i < elts_.size (); i++)
109 Grob *par = elts_[i]->get_parent (Y_AXIS);
111 if ((!par || !Axis_group_interface::has_interface (par))
112 && ! elts_[i]->empty_b (Y_AXIS))
113 add_element (elts_[i]);
119 Axis_group_engraver::add_element (Grob*e)
121 Axis_group_interface::add_element (staffline_p_, e);
124 ////////////////////////////////////////////////////////
125 // maybenot such a good idea after all., to put classes in .cc
127 #include "hara-kiri-group-spanner.hh"
128 #include "rhythmic-head.hh"
130 class Hara_kiri_engraver : public Axis_group_engraver
133 virtual Spanner*get_spanner_p ()const;
134 virtual void acknowledge_grob (Grob_info);
135 virtual void add_element (Grob *e);
137 TRANSLATOR_DECLARATIONS(Hara_kiri_engraver);
141 Hara_kiri_engraver::add_element (Grob*e)
143 Hara_kiri_group_spanner::add_element (staffline_p_, e);
148 Hara_kiri_engraver::get_spanner_p () const
150 Spanner * sp = new Spanner (get_property ("HaraKiriVerticalGroup"));
151 Hara_kiri_group_spanner::set_interface (sp);
156 Hara_kiri_engraver::acknowledge_grob (Grob_info i)
158 Axis_group_engraver::acknowledge_grob (i);
159 if (Rhythmic_head::has_interface (i.grob_l_)
160 || i.grob_l_->has_interface (ly_symbol2scm ("lyric-syllable-interface")))
162 Hara_kiri_group_spanner::add_interesting_item (staffline_p_, i.grob_l_);
166 Hara_kiri_engraver::Hara_kiri_engraver(){}
168 ENTER_DESCRIPTION(Hara_kiri_engraver,
169 /* descr */ "Like Axis_group_engraver, but make a hara kiri spanner, and add
170 interesting items (ie. note heads, lyric syllables and normal rests)
172 /* creats*/ "HaraKiriVerticalGroup",
173 /* acks */ "grob-interface",
177 ENTER_DESCRIPTION(Axis_group_engraver,
178 /* descr */ "Group all objects created in this context in a VerticalAxisGroup spanner.",
179 /* creats*/ "VerticalAxisGroup",
180 /* acks */ "grob-interface",
181 /* reads */ "VerticalExtent MinimumVerticalExtent ExtraVerticalExtent",